Patents by Inventor Phillip Yu

Phillip Yu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • High impact poly (urethane urea) polysulfides
    Publication number: 20070238848
    Abstract: The present invention relates to a sulfur-containing polyureaurethane and a method of preparing said polyureaurethane. In an embodiment, the sulfur-containing polyureaurethane adapted to have a refractive index of at least 1.57, an Abbe number of at least 32 and a density of less than 1.3 grams/cm3, when at least partially cured.
    Type: Application
    Filed: December 16, 2005
    Publication date: October 11, 2007
    Inventors: Nina Bojkova, Robert Smith, Robert Herold, Chandra Rao, William McDonald, Vidhu Nagpal, Marvin Graham, Phillip Yu, Suresh Sawant, Michael Okoroafor
  • High impact poly (urethane urea) polysulfides
    Publication number: 20060241273
    Abstract: The present invention relates to a sulfur-containing polyureaurethane and a method of preparing said polyureaurethane. In an embodiment, the sulfur-containing polyureaurethane adapted to have a refractive index of at least 1.57,an Abbe number of at least 32 and a density of less than 1.3 grams/cm3, when at least partially cured.
    Type: Application
    Filed: February 22, 2006
    Publication date: October 26, 2006
    Inventors: Nina Bojkova, Robert Smith, Robert Herold, Chandra Rao, William McDonald, Vidhu Nagpal, Marvin Graham, Phillip Yu, Suresh Sawant, Michael Okoroafor
  • High impact poly (urethane urea) polysulfides
    Publication number: 20050282991
    Abstract: The present invention relates to a sulfur-containing polyureaurethane and a method of preparing said polyureaurethane. In an embodiment, the sulfur-containing polyureaurethane adapted to have a refractive index of at least 1.57, an Abbe number of at least 32 and a density of less than 1.3 grams/cm3, when at least partially cured.
    Type: Application
    Filed: May 31, 2005
    Publication date: December 22, 2005
    Inventors: Nina Bojkova, Robert Smith, Robert Herold, Chandra Rao, William McDonald, Vidhu Nagpal, Marvin Graham, Phillip Yu, Suresh Sawant, Michael Okoroafor